docs: async def getitem(self, url: str, url_vars: Dict[str, str] = {},
                        *, accept: str = sansio.accept_format(),
                        jwt: Opt[str] = None,
                        oauth_token: Opt[str] = None
                        ) -> Any:
          """Send a GET request for a single item to the specified endpoint."""
  
          data, _ = await self._make_request("GET", url, url_vars, b"", accept,
                                             jwt=jwt, oauth_token=oauth_token)
          return data